Scribing instrument



' W. A. ROSS Dec. 2U, 1949 S CRIBING INS TRUMENT Filed Aug. 24, 1946WALL/AM A. 72055 INVENTOR.

Patented Dec. 20, 1949 SCRIBING INSTRUMENT William A. Ross, Portland,reg., assignor of onehalf to Paul F. Gronnert, Portland, Oreg.

Application August 24, 1946, Serial No. 692,757

1 Claim. 1

This invention relates to improvements in drafting instruments and moreparticularly (to the type used for scribing letters, numerals, symbols,and the like.

It is one of the principal objects of the invention to provide aninstrument of this character which is of simple and compact form andwhich is accurate in its operation of scribing a wide range of sizes andstyles Of letters, numerals and symbols. in conjunction with a template.

A further object is the provision of a device of this character whichmay be readily attached to. and successfully operated with, other wellknown types of scribers.

These and other objects will appear as my invention is more fullyherein-after described in the following specification, illustrated inthe accompanying drawing and finally pointed out in the appended claims.

In the drawing:

Figure 1 is a plan view of an extending arm.

Figure 2 is an edgewise view of Figure 1.

Figure 3 is a. plan view of the main body member of the invention.

Figure 4 is a top plan view of the invention in its completely assembledform.

Figure 5 is a side elevation of Figure 4.

Figure 6 is a fragmentary top plan view of one portion of a template inwhich letters, numerals, symbols, characters and the like are engraved.

Referrin now more particularly to the drawing.

Reference numeral l indicates the main body member of the invention inthe form Of a plate I terminating at one of its ends in a screw-actuatedgrip 2 for holding a writing instrument 3. The opposite end of the bodymember is notched as at 4 for engagement as an accessory with a pin 5carried by a frame 6 of a scriber now common in the art. When so desiredthe body member is fixedly secured to the frame by means of rivets orthe like extending through apertures I and '8.

In Figure 4 the invention is shown as a separate and individualinstrument adapted for use in conjunction with the template shown inFig- -ure 6.

As shown in Figure 5 the apertures i and 8 are threaded to receive a pin9 and the threaded shaft of a finger grip II], respectively. To the bodymember I adjusta bly attach an extending arm H by means of spaced andnumbered apertures I2 equally spaced apart throughout its length. Theextending arm is securely held in any adjusted position by placing anyone of the selected apertures i2 over the pin 9 and advancing the 2threaded shaft of the finger grip l0 into the threaded aperture 8 of thebody member.

To one end of the extending arm I secure a tracing pin [3 adapted to bedeposited in and to trace letters, numbers, symbols, and the like, asindicated at M and engraved in a template I5. To the opposite end of theextending arm I l I secure a pivot pin l6 adapted to travel lengthwiseof a channel ll formed in the template in spaced relation to theletters, etc., as shown.

In operation, the pin [6 becomes a pivot point for the extending arm I Ias it moves transversely, lengthwise, or in a. circular path in tracingthe engraved letters or the like, in the template. Due to the adjustableattachment of the extending arm to the body member I am able to scribe awide variety of sizes of letters, numerals, symbols, characters, and thelike, ranging from two sizes larger than the template size when theextreme right hand position as shown in dotted lines in Figure 4 to sixsizes smaller than template size when in an extreme left hand positionas shown in broken lines.

Between the scriber grip 2 and the finger grip Hi, I attach a pin 18whose upper end terminates in a cup 19 to receive the tip of the index:finger of the user for convenience in manipulating the instrument in thescribing operation.

While I have shown a particular form of embodiment of m invention, I amaware that many minor changes therein will readily suggest themselves toothers skilled in the art without departing from the spirit and scope ofthe invention. Having thus described the invention; what I claim as newand desire to protect by Letters Patent is:

A scribing instrument comprising an elongated body member adapted toreceive and hold a writing instrument at one Of its ends, spaced-apartinternally threaded apertures formed through the body member in thedirection of its length, an extending arm formed with a plurality ofapertures spaced-apart throughout its length and adjustably mountedlengthwise of the body member by means of a finger grip having athreaded shaft adapted for selective insertion through one of saidapertures in the extending arm and into threaded engagement with one ofsaid apertures in the body member, a stabilizing pin carried by the bodmember and adapted for insertion into another of said apertures in theextending arm, a tracing pin carried by one end of the extending arm andadapted to trace letters engraved in one portion of a template, a pivotpin carried by the opposite end of said extending arm and adapted forpivotal and sliding movement in a channel Number formed in the templatein spaced relation to said 2,011,195 letters. 2,088,063 WILLIAM A. ROSS.2,398,323 REFERENCES CITED The following references are of record in thegg f file of this patent: k

UNITED STATES PATENTS m i l Number Name Date 1,775,904 Kassebaum Sept.16, 1930 Name Date Keufel Aug. 13, 1935 Kassebaum July 27, 1937 OlsonApr. 9, 1946 FOREIGN PATENTS Country Date Germany Apr. 22, 1922

